Burglar-alarm



n. D. C.

(No Model.)`

W. J. AGKERMAN.

BUBGLAR ALARM.

No. 396,452. Patented Jan. 22, 1889.

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WITNESS/:"8:

' UNITE STATES ATENT intron.a

\VILI.IAM J. ACKERMAN, OF GRAND RAPIDS, MICHIGAN.

BURG LAR-ALARM. p

SPECIFICATION forming part of `Letters Patent No. 396,452, dated January22, 1889.

Application filed September 17, 1888. Serial No. 285,632. (No model.)

To all whom. it may concern:

gree without sounding an alarm; second, toV

provide a burglar-alarm with which the glass in a window, or anyconsiderable portion thereof, cannot be removed without sounding analarm third, to provide a burglar-alarm having pressure-bars extendingover the sur- .face of the glass that can be folded out of sight duringthe day fourth, to provide a burglar-alarm with which the window cannotbe raised the least degree without throwing pressure-bars out upon thesurface of the glass, except when these pressure-bars are especiallyarranged for raising and lowering the window, and, fifth, to provide aburglar-alarm that may be instantly and conveniently disconnected, sothat the window may be raised and lowered without sounding an alarm. I

Vattain these objects by the mechanism illustrated in the accompanyingdrawings, in which Figure l is a front elevation of my appliance as itappears when attached to a window, in which No. l shows thepressure-arms extended, andNo. 2 shows the same secured to the side ofthe standard. Fig. 2 is a section .of a window-sash with my applianceattached as a side elevation, showing the relative position of itsseveral parts, the bell G being shown in section for the purpose ofexposing the connecting mechanism, and Fig. 3 shows modified forms ofapplying the pressure-bars, whereby the projections a on the jackets andthe detached springs J may be dispensed with.

Similar letters refer to similar parts throughout the several views.

In the accompanying drawings, A A, &c., are sh'ort lengths of smalltubes arranged for the support and free action of pressure-bars orglass-pressers I. T is a rod which passes through and supports the tubesA. I I, &c., are a series of pressure-bars, which are arranged to pressupon'the surface of the glass. F is a cross-bar for the support andmanipulation of the slide H. The combination o f these several partsconstitutes the main features of my invention; and G is 'an ordinaryalarm-bell, any form of which may be used with my appliance. a"

The supports A are made of small tubing, preferably not exceedingonefourth of an inch in its outside diameter, and are fitted to workfreely upon the rods T. They are each provided with a small slot, d, forthe free action of pins e in the rods, and with a pin, k., for thereception ofthe end of a spring, K. Each side of the window may beprovided with one or more of these supports, to each of which an arm orpressure-bar, I, is attached in such a manner that it may befolded downby the side of the supports, as shown at No. 2 in Fig. l, or may beextended over the surface of the glass, as shown at No. l. These armsare held in place, when folded down by the side of the supports, bymeans of catches C, and are thrown out t0 and held Ain position, asshown at No. l, either by means of a detached spring, J, acting upontheir lower sides, or by a coil or bow spring formed in the arm, asshown in Fig. 3, or in any other convenient form. Their outer ends areturned down or out, as shown in Fig. 2, so that the points t' rest uponthe surface of the glass, and are drawn snugly upon it by the action ofthe springs K upon the supports A. Then the hinged joint a and thedetached spring J, as shown in Fig. l, are made use of, the spring isattached solidly at one end to the body of the support A, the oppositeend being left free to act upon the pressure-arm, as specified; but whenthe coil or bow spring shown in Fig. 3 is used the arms are attachedsolidly to the support, and the projection a and spring J are dispensedwith.

The rods T should be made the entire length of a window-sash andsupported at each end by plates w, which are firmly attached one to eachrail of the sash, and it should be fitted to work freely inside of thesupporting-tubes A, (except when but one pressure-arm is used, in whichcase the pressure-arm may be at- IOO tached directly to the rod and thesupporting-tubes dispensed with,) and provided with narrow collars f,iirmly attached at proper points to support each ot' the supportingtubesindependent of the other, one of these collars being provided with asmall knob, n, with which to turn the rods to position by hand whendesired. rthey are also provided with pins e, which are arranged to workin slots d in the supports A in such a manner that if one pressure-armbe allowed to drop through an aperture in the glass the wall at the endof the slot will engage with the pin and carry the rod with it, whilethe balance of the pins will carry around freely in the slots, so' thatthe'other pressure-arms may stand in position. upon the glass. The lowerends of the rods are provided with an incline, fr', which is arrangedyto act upon a corresponding incline projecting from the surface of thecross-bar F. These rods are secured to the sash in such a position thatthe supports A will stand in the hollow of the ogee7 of the sash-stilewith the outer surface just flush with the surface of the stile.

The catches C are pivoted to the sash-stile at c', the end c projectingover the support and bent back, as shown in Fig. 2, in a proper form toclasp over and hold the ends of the pressure-arms in position whenfolded down by the side of the supports. The opposite ends of thesecatches arc pivoted to a bar, B, which in turn is pivoted to a lever, D,at c2, and this lever is pivoted to the sash-stile at c3, with the outerend projecting and arranged to engage with a bracket, E, which issecured to the jamb-casin of the window-frame in such a manner that itmay be thrown around over the end ot' the lever, or may bedrawn aside sothat t-he end of the lever will pass between it and the line ot thesurface ot' the sash and allow of the raising ol.' the windowwithoutfreeing the ends of the pressure-arms.

Then an ordinary alarm-bell is attached to the window-stool, as shown inthe accompanying drawings,Ialso attach a cross-bar, F, to the bottomrail of the sash by means ot plates l, in which it is iitted to turnfreely. I provide this cross-bar with an incline, fr, for each standardor rod used upon a window, arranged to act with the beveled end t" ot'the rods, for the purpose of turning the cross-barby the action of therod when turned. I also provide, at any convenient point on thecross-bar, a ilattened surface, 7i', for the support and working of theslide Il, which is attached to the rail of the sash in such a mannerthat it may freely work up and down by means of a pin, t, and a slot,o", in the slide. This slideis provided with an. angled projection, 71,which rests upon the flattened surface h on the cross-bar and supportsthe entire weight of the slide, with a long proj ection, h, arranged torest upon the top of the stop-lever u, and hold its projecting end upbehind the stoppin s on the bell-hammer, and a short projection, 71.2,arranged to rise up against the end ot the stop-lever, trip it, and passby.

rlhe stop-lever a is pivoted to the standard yin, with the shorter endprojectingtoward the sash-rail and resting between the projections 7Land 71.2, and the opposite end projecting out to engage with the pin .son the hammer ot the alarm-bell. The standard mis secured to thewindow-stool between the bell and the sash, and the bell G, which may beany ordinary stein-winding or other alarm-bell, is secured to the winlowstool in position to be acted upon by the alarm mechanism, ashereinbet'ore described.

For the purpose of allowing the window to be raised without sounding analarm, l provide a slide, P, which is provided with a slot tor thereception of the pin or screw I, upon which it works freely. The innerend at P, I elevate so that it will come behind the pin .S on thebell-hammer and prevent the hammer from moving when the stop-lever u isdropped from behind it; and for more fully insuring the springing ot thealarm in case the glass is removed when the pressure-fingers are coninedalong the body of the support, as shown in Fig. 2, I sometimes pivot alever, L, to the ogee of thc sash-stile, as at zr, Fig. 0, near eachcatch. This lever is provided with a bend or elevation, av', near thepoint of attachment, for the support ot a spring, M, the opposite end ofthe lever being supported by resting upon the glass.

The spring M is attached firmly at one end to the sash-stile. Theopposite end, being supported by passin over the lever, )rojects upwardat a sharp incline and rests upon the edge ot' the catch in such amanner that when the glass is removed from under the end of the leverthe lever will fall around to the position indicated by the dotted linesL and allow the spring M to press upon the end of the catch withsufficient torce to throw it off from the end of the pressure-arms andallow them to fall through the aperture in the glass, or extendthemselves upon the surface of the glass, though this appliance is notan absolute necessity, as the springs K may be made strong enough todraw the pressure-arms around from under the catches when the support(or glass) is removed from under the end ot a pressurebar.

Then I desire to attach my alarm-bell at a distance from the window, orwish to attach an electric bell to my glass-pressure attachment, Idispense with the cross-bar F, with the slide II, and with the inclinest at the lower end of the rods, and connect the bell with the .rod T bymeans ot a small wire or other suitable device in the usual manner, andin such a way that the raisin of the window or the turning ot' the rodwill cause the alarm to sound.

To set my alarm mechanism, wind up the alarm-bell, withdraw the slide Ifrom behind the pin s, and throw the bracket E over the IOO IOS

IIO

end of the lever D. lith the appliance in this position, a slightraising of the window will cause the stop-lever u to drop from behindthe pin s and sound an alarm, and at the same time will trip the lever Dupon the bracket E and release the pressure-arms I from the catches Cand allow them to throw out over the surface of the glass, as shown atNo. l, (or the pressure-bars may be thrown out in the first instance,)with the pressure-bars resting upon the surface of the glass. If anyportion of the glass upon which the end of the pressure-bars rests iscut away or taken out, the bar will drop through the aperture and turnthe rod T sufficiently to throw the cross-bar F over and raise the slideH, drop the end of the stop-lever u from behind the pin s, and sound analarm. As soon as the pressure-bar is brought back to place the weightof the slide II upon the liattened surface 7i will turn the cross-bar Fback to position.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the YUnited States, is-

l. A burglar-alarm having an alarm-bell and stop-lever, in combinationwith a tripping device, H, attached to the sash in such a m anner thatit maybe raised and lowered with or without raising the sash, andprovided with a projection, h, which rests upon the cross-bar, aprojection, 7L", that rests upon the stop-lever, and a slot, r, to allowef its being raised and lowered without raising and lowering the sash byturning the cross-bar, a cross-bar, F, arranged to turn freely in andsupported by plates l and provided with a iiattened surface, 7i', soarranged that the turning of the bar will raise or lower the slide H,and with inclines r, which act with correspon ding inclin es on the endof the rod T to turn the cross-bar when the rods turn, supporting-rod T,havin the lower end eut diagonally to correspond with the inclines y1'ou the cross-bar, pressurebars I, attached to the supporting-rods andarranged to throwout over the surface of the glass or to fold down bythe side of the supporting-rod, springs J, attached to the support andarranged to throw the pressure-bars out over the glass, spring K,arranged to draw the pressure-bars toward the glass, and pins k in thesupport, for the reception of the spring K, substantially as and for thepurpose set forth.

2. The combination, in a burglar-alarm, of an alarm-bell and astop-lever with a tripping device or slide, H, attached to the sash by apin, t, passing through the slot r, and provided with projections 71,and 7L, a cross-bar, F, supported by and arranged to turn freely inplates attached to the window-sash, and provided with a flattenedsurface for the support and manipulation of the slide H, and withprojecting inclines r, for turning the cross-bar by the action of thediagonal end of the supporting-rod T, supporting-rod T, having the lowerend formed to act upon the inclines t', so as to turn the cross-bar whenthe rod turns, and provided with jackets or .tubes A, within which it isarranged to turn freely, with collars for the support of the tubes, pinse, which are acted upon by the tubes to turn the rod, and a knob, fn,with which to turn the rod to place by hand, and is attached to thesashstile by means of plates fir, in which it turns freely, tubes orsupports A, which are arranged to work freely upon the rod T, and areprovided with slots d, for the free action of the pins e, and with apin, k, for the reception of the end of the spring- K, pressure-bars I,attached to the tubes or supports A in such a manner that they may befolded down by the side of the supports or thrown out over the glass,springs J, attached at one end to the tubes and arranged to act upon thepressurebars in throwing them out over the glass, springs K, attached atone end to the sash and at the other end to the pin k, for the purposeof drawing the pressure-bars against the glass, catches C, pivoted tothe sash and arranged to hold the pressure-bars down to the side of thesupports, connection B, lever D, and bracket E, arranged to act upon thecatches C, all substantially as described, and for th purpose set forth.j

3. The combination, lin a burglar-alarm, of an alarm-bell and stopleverwith a slide, H, having projections h, h, and h", and a slot, r, andattachedto the sash by means of a pin, t, a cross-bar, F, provided witha fiattened surface for the support of the slide, and inclines tofacilitate turning the cross-bar, and attach ed to the bottom rail ofthe sash by means of plates, in which it turns freely, supportingrods T,attached to the sash-stile by means of plates, in which it is arrangedto turn freely, supports A, arranged to work freely upon thesupporting-rods, springs K, arranged to turn the supporting-rods byattaching one end to the sash-stile and the other end to a pin on thesupport, catches C, pivoted to the sash-stile and arranged to extendover the support and hold the pressure-bars to place, connection B,lever D, and bracket E, arranged to act upon the catches, and a lever,L, pivoted to the sash-stile with one end resting upon the glass, and aspring, M, one end of which is attached to the sash-stile, and the otherend passes over the lever and against the end of the catches in such amanner that when the lever is thrown down the spring will 'force thecatches around and allow the arms to throw out over the surface of theglass, substantially as and for the purpose set forth.

Il. The combination, in a burglar-alarm, of an alarm-bell provided withthe necessary stop-motion, with support-ing-rods T, arranged to turnfreely in plates w, attached to the sash-stile and provided with a pin,k, pressure-bars I, attached to the supporting-rods in such a mannerthat they may be folded down by the side of the rod, or may be extendedout over the glass, a spring, K, which attaches at one end to thesash-stileand at the other end IOO IIO

to the pin 7c on the supporting-rod, to hold the pressure-bars solidlyagainst the glass, and a catch for holding' the pressure-bars in placeat the side of the supporting-rod, substantially as and for the purposeset forth.

5. The combination, in a burglar-alarm, of an alarm-bell provided withthe necessary stop-motion, with supporting-rods for the support of thetubes A, said support-ing-rods being provided with collars f, one beloweach tube, and a pin, e, to Work in each slot d in the tubes, andsupported in bearings or plates .secured to the sash, supports A, whichare arranged to turn freely upon the supportingrod, and are providedwith slots that Work over the pins e in the rod, and with pins 7c toreceive one end of the springs K, pressurebars I, so attached to thesupporting-tubes that they inay be folded down by the side of thesupport, or may be thrown ont over the glass, springs J, arranged tothrow the pressure-bars out over the glass, catches C, arranged tosecure the pressure-bars down to the body of the supports, connectionsB, lever D, pivoted to the sash-stile, and bracket E, pivoted to theWindoW-jamb for the purpose of operating the catch, substantially as andfor the purpose set forth.

(3. A burglar-alarm having an alarm-bell with the necessary stopmechanism, and having supporting-rod T, supporting-tubes A,pressure-bars I, catches C, with connections B, D, and E, spring J, forthrowingr the pressurebars to position, spring K, for holding thepressure-bars solidly against the glass, and a pin, k, for the receptionof the spring K, in combination with a lever, L, pivoted at one end tothe ogee of the sash-stile, the other end being left free to rest uponthe glass, and a spring, M, attached at one end to the sashstile, theother end passing over the lever and resting against the end of a catch,C, substantially as and for the purpose set forth.

7. A burglar-alarm consisting of an alarm having the necessarystop-motion, in combination With pressure-bars pivoted to a standard atthe side of the sash-stile, arranged to extend out over and be heldfirmlyagainst the surface of the glass, substantially as and for thepurpose set forth.

Signed at Grand Rapids, Michigan, this 13th day of September, 1888.

NVILLIAM J. ACKERMAN.

ITHIEL J. CILLEY, \V. H. MCCORD.

